On 22 Sep 2014, at 04:20, Rui Paulo <rpa...@me.com> wrote: > On Sep 21, 2014, at 18:48, Steve Kargl <s...@troutmask.apl.washington.edu> > wrote: >> On Sun, Sep 21, 2014 at 06:38:48PM -0700, Rui Paulo wrote: >>> On Sep 21, 2014, at 18:19, Steve Kargl <s...@troutmask.apl.washington.edu> >>> wrote: >>>> >>>> #include <stdio.h> >>>> #include <stdint.h> >>>> >>>> int >>>> main(void) >>>> { >>>> uint16_t i; >>>> i = 0x3ff0+63; printf("%x\n", i); >>>> i = 0x3ff1+63; printf("%x\n", i); >>>> i = 0x3ff2+63; printf("%x\n", i); >>>> i = 0x3ff3+63; printf("%x\n", i); >>>> i = 0x3ff4+63; printf("%x\n", i); >>>> i = 0x3ff4+63; printf("%x\n", i); >>>> i = 0x3ff6+63; printf("%x\n", i); >>>> i = 0x3ff7+63; printf("%x\n", i); >>>> i = 0x3ff8+63; printf("%x\n", i); >>>> i = 0x3ff9+63; printf("%x\n", i); >>>> i = 0x3ffa+63; printf("%x\n", i); >>>> i = 0x3ffb+63; printf("%x\n", i); >>>> i = 0x3ffc+63; printf("%x\n", i); >>>> i = 0x3ffd+63; printf("%x\n", i); >>>> i = 0x3ffe+63; printf("%x\n", i); >>>> i = 0x3fff+63; printf("%x\n", i); >>>> return 0; >>>> } >>> >>> Looks like it. Please file a bug report with LLVM. >>> >> >> Unfortunately, llvm requires an account to report bugs. > > I think I know what's happening: "e" is being parsed as scientific notation.
Yes, this is an unfortunate side effect of hexadecimal float notation (either in C99, or as a gcc extension [1]). -Dimitry [1] https://gcc.gnu.org/onlinedocs/gcc/Hex-Floats.html
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